Holley Diecast In-Tank Carb RetroFit Fuel Pump Module-Returnless System 12-129 carbureted-regulators 7L V8 1979 - 1989

7L V8 1979 - 1989 GMC P3500   454/7

3L V8 1967 - 1969 Dodge Monaco 383/6

50 inch Emission Code 4 Engine Big Block Chevy Header Finish Black Paint Header Style Long Tube Port Shape Round Primary Tube Dia

6L V8 1970 - 1972 GMC K25/K2500 Suburban   402/6

Holley Diecast In-Tank Carb RetroFit Fuel Pump Module-Returnless System 12-129 carbureted-regulators 7L V8 1979 - 1989Overview: The Holley "red and blue" electric fuel pumps have been the performance standard for decades. They continue to perform well, however, the evolution of fuel pump technology has surpassed them in quiet operation and fuel delivery capabilities that an in tank module can deliver. Looking ahead to the future, Holley has designed their latest retrofit pump module especially for the carbureted applications. The module design is very similar to the